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Current version by: Dan ,

Text:

It sounds like you have a trackpad issue. Double check by using a mouse (USB or Bluetooth). If the problem is not visible using it then you'll need to replace the trackpad and cable.
 
If the problem is still present then you may have a GPU logic issue. But before you jump out of your skin here, There is more than one issue all of the dual GPU based systems have. The first is a tantalum capacitor that breaks down, some people assumed you needed to reball the GPU for this which is not the case. Then there is the GPU issue where the chip was cooked, running heavy graphics stuff the system was not designed to support (it's a laptop not desktop!) The last possibility is a bad LVDS cable or the logic board connector got wet and is corroded.
If the problem is still present then you may have a GPU logic issue. But before you jump out of your skin here, There is more than one issue all of the dual GPU based systems have. The first is a tantalum capacitor that breaks down, some people assumed you needed to reball the GPU for this which is not the case. Then there is the GPU issue where the chip was cooked, running heavy graphics stuff the system was not designed to support (it's a laptop not desktop!) The last possibility is a bad LVDS cable or the logic board connector got wet and is corroded.
 
You might find reviewing Louis Rossmann's vids helpful in understanding what happens and what you are facing here: [https://www.youtube.com/watch?v=jG0WpGu-0Mk|820-2850 with no video on screen; we've seen this problem before!]
 
Watch this vid: [https://www.youtube.com/watch?v=zYjRTKxKGVo|PUBLIC SCHOOL DISTRICTS USING MACS: let's talk]. The section thats important is when he starts talking about popcorning the logic board (3:00 minutes in). As you don't want to cook your GPU like these CPU's were!

Status:

open

Edit by: Dan ,

Text:

It sounds like you have a trackpad issue. Double check by using a mouse (USB or Bluetooth). If the problem is not visible using it then you'll need to replace the trackpad and cable.
 
If the problem is still present then you may have a GPU logic issue. But before you jump out of your skin here, There is more than one issue all of the dual GPU based systems have. The first is a tantalum capacitor that breaks down, some people assumed you needed to reball the GPU for this which is not the case. Then there is the GPU issue where the chip was cooked, running heavy graphics stuff the system was not designed to support (it's a laptop not desktop!)
 
You might find reviewing Louis Rossmann's vids helpful in understanding what happens and what you are facing here.here: [https://www.youtube.com/watch?v=jG0WpGu-0Mk|820-2850 with no video on screen; we've seen this problem before!]
You might find reviewing Louis Rossmann's vids helpful in understanding what happens and what you are facing here.here: [https://www.youtube.com/watch?v=jG0WpGu-0Mk|820-2850 with no video on screen; we've seen this problem before!]
 
Watch this vid: [https://www.youtube.com/watch?v=zYjRTKxKGVo|PUBLIC SCHOOL DISTRICTS USING MACS: let's talk]. The section thats important is when he starts talking about popcorning the logic board (3:00 minutes in). As you don't want to cook your GPU like these CPU's were!

Status:

open

Edit by: Dan ,

Text:

It sounds like you have a trackpad issue. Double check by using a mouse (USB or Bluetooth). If the problem is not visible using it then you'll need to replace the trackpad and cable.
 
If the problem is still present then you may have a GPU logic issue. But before you jump out of your skin here, There is more than one issue all of the dual GPU based systems have. The first is a tantalum capacitor that breaks down, some people assumed you needed to reball the GPU for this which is not the case. Then there is the GPU issue where the chip was cooked, running heavy graphics stuff the system was not designed to support (it's a laptop not desktop!)
 
You might find reviewing Louis Rossmann's vids helpful in understanding what happens and what you are facing here if this is your issue. Watchhere.

Watch
this vid: [https://www.youtube.com/watch?v=zYjRTKxKGVo|PUBLIC SCHOOL DISTRICTS USING MACS: let's talk]. The section thats important is when he starts talking about popcorning the logic board.board (3:00 minutes in). As you don't want to cook your GPU like these CPU's were!
You might find reviewing Louis Rossmann's vids helpful in understanding what happens and what you are facing here if this is your issue. Watchhere.

Watch
this vid: [https://www.youtube.com/watch?v=zYjRTKxKGVo|PUBLIC SCHOOL DISTRICTS USING MACS: let's talk]. The section thats important is when he starts talking about popcorning the logic board.board (3:00 minutes in). As you don't want to cook your GPU like these CPU's were!

Status:

open

Edit by: Dan ,

Text:

It sounds like you have a trackpad issue. Double check by using a mouse (USB or Bluetooth). If the problem is not visible using it then you'll need to replace the trackpad and cable.
 
If the problem is still present then you may have a GPU logic issue. But before you jump out of your skin here, There is more than one issue all of the dual GPU based systems have. The first is a tantalum capacitor that breaks down withdown, some people assumed you needed to reball the GPUGPU for this which is not the case. Then there is the GPU issue where the chip was cooked, running heavy graphics stuff the system was not designed to support (it's a laptop not desktop!)
If the problem is still present then you may have a GPU logic issue. But before you jump out of your skin here, There is more than one issue all of the dual GPU based systems have. The first is a tantalum capacitor that breaks down withdown, some people assumed you needed to reball the GPUGPU for this which is not the case. Then there is the GPU issue where the chip was cooked, running heavy graphics stuff the system was not designed to support (it's a laptop not desktop!)
 
You might find reviewing Louis Rossmann's vids helpful in understanding what happens and what you are facing here if this is your issue. Watch this vid: [https://www.youtube.com/watch?v=zYjRTKxKGVo|PUBLIC SCHOOL DISTRICTS USING MACS: let's talk]. The section thats important is when he starts talking about popcorning the logic board.

Status:

open

Original post by: Dan ,

Text:

It sounds like you have a trackpad issue. Double check by using a mouse (USB or Bluetooth). If the problem is not visible using it then you'll need to replace the trackpad and cable.

If the problem is still present then you may have a GPU logic issue. But before you jump out of your skin here, There is more than one issue all of the dual GPU based systems have. The first is a tantalum capacitor that breaks down with some people assumed you needed to reball the GPU. Then there is the GPU issue where the chip was cooked, running heavy graphics stuff the system was not designed to support (it's a laptop not desktop!)

You might find reviewing Louis Rossmann's vids helpful in understanding what happens and what you are facing here if this is your issue. Watch this vid: [https://www.youtube.com/watch?v=zYjRTKxKGVo|PUBLIC SCHOOL DISTRICTS USING MACS: let's talk]. The section thats important is when he starts talking about popcorning the logic board.

Status:

open